Fire-extinguisher for oil-tanks and the like



I. N. COOPER.

FIRE EXTINGUISHER FOR OIL TANKS AND THE LIKE.

APPLICATION FILED DEC-8, 1919.

Patented Aug. 10, 1920.

PATENT OFFICE.

ISAAC N. COOPER, OF FORT WORTH, TEXAS.

FIRE-EXTINGUISHER FOR- OIL-TANKSL AND THE LIKE.

Application filed. December 8, 1919.

To all whom it may concern:

Be it known that 1, Isaac N. Coornn, a citizen of the United States ofAmerica, residing at Fort Worth, in the county of Tarrant and State ofTexas, have invented certain new and useful Improvements in Fire-Extinguishers for Oil-Tanks and the like, of which the following isa specification.

My invention relates to fire-extinguishers, and more particularly tofire-extinguishers for stopping the burning of oil in oil tanks; and theobject is to provide simple devices for stopping instantly a lire whichis burning an oil tank and to provide devices which are simple inconstruction and operation and whichwill involve relatively smallexpense in making and installing. Other ob jects and advantages will befully explained in the following description and the invention will bemore particularly pointed out in the claims.

Reference is had to the accompanying drawings which form a part of thisapplication.

Figure 1 is a side elevation of an oil tank equipped with the improvedfire-extinguisher. Fig. 2 is an enlarged sectional view, showing themeans for effecting a suction. Fig. 3 is a plan view of the gearing andfans for effecting the suction. Fig. 4 is asimilar view, but showing avariation in the gearing. Fig. 5 is a detail view of the driving gear.

Similar characters of reference are used to indicate the same partsthroughout the several views.

One of the necessary arrangements in the installing of thefire-extinguishing apparatus is to mount the roof 1 of the oil tankabove the top 2 of the wall of the tank. The object is to have the roofor cover 1 spaced from the tank wall so that air will pass under theroof. The fire will be drawn away from the oil by suction and thesuction is created by revolving fan blades. A hood 3 is mounted on topof the roof 1 which has an opening t in the central part or at the apexof the cone-shaped roof. Bars 5 and 6 are secured in the hood 3 and ashaft 7 is journaled in the bars 5 and 6. Fans 8, 9, and 10 are maderigid with the shaft 7 The fans are driven by a motor 11 which may belocated at any suitable place. A sprocket chain 12 is driven by themotor 11 and this chain drives a bevel gear wheel Specification ofLetters Patent.

Patented Aug. 10, 1920.

Serial No. 343,410.

13 which may be integral with a gear wheel 14. The Wheel 13 drives abevel gear wheel 15 which may be integral or rigid with a gear wheel 16.Th gear wheel 16 drives a chain 17. The chain 17 drives a gear wheel 18which is rigid with shaft 7 which drives the fans. hen the fans aredriven, there will be a suction created above the central part of thetank. The hood 3 may be supported on bars 19 which are supported onupright posts 20. The roof 1 is supported above the top edge 2 of thetank by stays 21. A pipe 22 may be used to conduct the draft to anysuitable distance. The draft will carry away all gases and so remove themain cause of the fire and the flame will be gathered or drawn away bythe suction and extinguished.

This invention is useful for extinguishing H tires at oil tanks,turpentine and varnish refineries, cotton seed oil mills, and also inpacking houses where there are oil reservoirs, and in other places wherethere are inflammable liquids.

.Vhat I claim, is,

1. A fire-extinguishing apparatus in combination with a tank containingan inflammable material and provided with a coneshaped cover spaced fromthe tank and extending radially outward beyond the edge of the tank andhaving an opening through the apex of the cover, and means for producing a draft radially inwardly between the cover and the tank andthrough said opening for driving flames away from the interior of saidtank.

2. A fire-extinguishing apparatus comprising a hood placed on a vesselcontaining inflammable material and having communication therewith,means for permitting air to flow in said vessel, a vertical shaftjournaled in said hood, one or more sets of fan blades rigid with saidshaft, means for drivin said shaft, and a pipe connected to said hoodfor conveying away the draft created by said fan blades.

3. A fire-extinguishing apparatus in com bination with a tank containingan inflammable material and provided with a coneshaped cover spaced fromsaid tank and having an opening at the apex of the cover, a hood mountedon said cover and communicating with said tank through said cover, adischarge pipe connected to said hood, and means for creating suctionthrough said hood.

mable material and provided with a cone-'- shaped cover having anopening at the apex thereof, means for spacing said cover from the edgeof the tank, a hood mounted on said cover and covering said opening, adischarge pipe connected to said hood, and

means for creating a suction draft in said hood. 10

In testimony whereof Iset my hand, this 3rd day of December, A. 'D.,1919.

ISAAC N. COOPER.

